The AR in “AR-15” rifle is ArmaLite rifle. It is not an “assault rifle”. The AR-15 has emerged huge since the ban expired. This rifle is too simple in its design and operation and can be assembled easily at home. The rifle can be split into two major components and then minor pieces. The two major components of the rifle are the upper receiver and the lower receiver. Bolt Carrier Groups (BCGs) and barrels are the other two main parts of the rifle.
Components of an Upper
An upper receiver is the upper part of a rifle. Every essential component of an AR-15 is incorporated into the upper receiver. Continue Reading for the components of AR-15 uppers. The AR-15 rifle’s upper comprises the top receiver, barrel, gas system, bolt service provider group and handguard. There are a lot of small parts that are involved, like suppressors, and optics.
The different types of Uppers
There are four types of AR-15 upper receiver, each with its distinct design, advantages or disadvantages. You Can Check Here for the different types of AR-15 uppers. The four prime receivers are known as the A1, A2, A3 and A4 upper receivers. Any part of top receiver components is available for sale without a background check or bureaucracy.
How does an upper work?
You Can Check Here for the mechanism of AR-15 uppers. The steps of firing a round, are feeding a bullet, then chambering and locking, firing and unlocking, then extracting and ejecting, and finally cocking. All these are found in the upper receiver. Once that process is done it starts all over again for the next round. Since a lot is happening in the upper, special care was taken to design it, so that replacing parts can be easy and relatively quick.